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CRYPT_E_BAD_ENCODE
Encoding or decoding failed because the cryptographic input does not satisfy the expected binary format or its declared structure.
What to check for CRYPT_E_BAD_ENCODE
- Verify the exact source bytes and expected format before assuming a certificate-chain issue.
- Check for incorrect conversion between PEM/base64 text and DER or CMS binary input.
- Identify the function and structure being decoded; the same blob cannot be interpreted as arbitrary certificate, CRL, and CMS structures.
Microsoft: CryptMsgOpenToDecode
Diagnostic discriminator: Validate the binary encoding and declared structure at the exact decode boundary. This result identifies malformed encoded data before trust, signer or revocation analysis.
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